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Evaluation of design options for the scale-space primal sketch analysis of brain activation images
KTH, Tidigare Institutioner, Numerisk analys och datalogi, NADA.ORCID-id: 0000-0002-9081-2170
2000 (engelsk)Inngår i: : HBM'00, published in Neuroimage, volume 11, number 5, 2000, 2000, Vol. 11, s. 656-656Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A key issue in brain imaging concerns how to detect the functionally activated regions from PET and fMRI images. In earlier work, it has been shown that the scale-space primal sketch provides a useful tool for such analysis [1]. The method includes presmoothing with different filter widths and automatic estimation of the spatial extent of the activated regions (blobs).

The purpose is to present two modifications of the scale-space primal sketch, as well as a quantitative evaluation which shows that these modifications improve the performance, measured as the separation between blob descriptors extracted from PET images and from noise images. This separation is essential for future work of associating a statistical p-value with the scale-space blob descriptors.

sted, utgiver, år, opplag, sider
2000. Vol. 11, s. 656-656
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-40152DOI: 10.1016/S1053-8119(00)91586-6OAI: oai:DiVA.org:kth-40152DiVA, id: diva2:463488
Konferanse
Sixth Annual Meeting of the Organization For Human Brain Mapping
Merknad

QC 20111209

Tilgjengelig fra: 2011-12-09 Laget: 2011-09-13 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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